/**
 * Copyright 2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package aws.datameer.awstasks.exec;

import java.io.IOException;

import aws.datameer.awstasks.exec.handler.ExecChainHandler;

public abstract class ShellExecutor {

    public <R> R execute(ShellCommand<R> command) throws IOException {
        return execute(command, command.getDefaultHandler());
    }

    public <R> R execute(ShellCommand<?> command, ExecOutputHandler<R> rootHandler, ExecOutputHandler<?>... chainedHandlers) throws IOException {
        return execute(command, new ExecChainHandler<R>(rootHandler, chainedHandlers));
    }

    public abstract <R> R execute(ShellCommand<?> command, ExecOutputHandler<R> outputHandler) throws IOException;

}
